1. The chemical formula of a compound means the symbolic representation of the composition of a compound. From the chemical formula of a compound, we can know the number and kinds of atoms of different elements that constitute the compound. For example, from the chemical formula CO₂ of carbon dioxide,Read more

    The chemical formula of a compound means the symbolic representation of the composition of a compound. From the chemical formula of a compound, we can know the number and kinds of atoms of different elements that constitute the compound. For example, from the
    chemical formula CO₂ of carbon dioxide, we come to know that one carbon atom and two oxygen atoms are chemically bonded together to form one molecule of the compound, carbon dioxide.

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  2. (i) Al(SO₄) ₃→ Aluminium sulphate (ii) CaCl₂→ Calcium chloride (iii) K₂SO₄→ Potassium sulphate (iv) KNO₃ → Potassium nitrate (v) CaCO₃→ Calcium carbonate For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/

    (i) Al(SO₄) ₃→ Aluminium sulphate
    (ii) CaCl₂→ Calcium chloride
    (iii) K₂SO₄→ Potassium sulphate
    (iv) KNO₃ → Potassium nitrate
    (v) CaCO₃→ Calcium carbonate

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  3. (i) Al(SO4)3→ Aluminium sulphate (ii) CaCl2→ Calcium chloride (iii) K2SO4→ Potassium sulphate (iv) KNO3 → Potassium nitrate (v) CaCO3→ Calcium carbonate For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/

    (i) Al(SO4)3→ Aluminium sulphate
    (ii) CaCl2→ Calcium chloride
    (iii) K2SO4→ Potassium sulphate
    (iv) KNO3 → Potassium nitrate
    (v) CaCO3→ Calcium carbonate

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    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/

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  4. (i) Sodium oxide → Na₂O (ii) Aluminium chloride → AlCl₃ (iii) Sodium suphide → Na₂S (iv) Magnesium hydroxide → Mg(OH)₂ For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/

    (i) Sodium oxide → Na₂O
    (ii) Aluminium chloride → AlCl₃
    (iii) Sodium suphide → Na₂S
    (iv) Magnesium hydroxide → Mg(OH)₂

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  5. The size of an atom is so small that it is not possible to see it with naked eyes. Also, atom of an element does not exist independently.

    The size of an atom is so small that it is not possible to see it with naked eyes. Also, atom of an
    element does not exist independently.

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